JSFiddle - React, Tailwind, and code Playground

HTML

<div class="col-md-2">
    <div class="tile tile-square tile-auto">
    </div>
</div>

CSS

.tile-square{
    width: 100%;
    background-color: red;
}

JavaScript

var width = $('div.tile-square').width();
$('div.tile-square').height(width + 'px');